The first time I treated for RB's, I found AEFW's about a month or so later. Fast forward a couple years to a complete SPS loss in a move and just treated for RB's again about 4 months ago, but no signs of AEFW's. Since the first issues with AEFW's, the QT process has gotten much more stringent (removing base rock, repeated dips, obs). I had a bryopsis outbreak start in the fourth week of the first RB treatment (mature tank). I never got it taken care of until the move. I attributed the Interceptor with killing something off that had kept the bryopsis out (had never had it before then). Could be coincidences, but how will we know...